New feature extraction for applied stress detection on ferromagnetic material using magnetic Barkhausen noise
New feature extraction for applied stress detection on ferromagnetic material using magnetic Barkhausen noise
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DOI：
10.1016/j.measurement.2015.05.031
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发表时间：
2015-09-01
期刊：
影响因子：
5.6
通讯作者：
Wang, Ping
中科院分区：
文献类型：
--
作者：
Ding, Song;Tian, GuiYun;Wang, Ping
本文报道了一种利用磁巴克豪森噪声(MBN)确定外加应力的新特征提取方法。采用低频三角波激励，在渗碳回火的En36钢试件上产生交变磁场。在压缩和拉伸两种弹性应力作用下，测量了MBN信号，得到了MBN信号的轮廓。研究了非对称形状巴克豪森噪声中的有效阻尼力的压缩和拉伸应力特征。在此基础上，提出了MBN轮廓的偏斜度作为应力检测的新特征。将新特征的非线性行为和灵敏度与均方根峰值和峰值位置进行了比较。讨论了磁化壁能和涡流衰减是产生这种现象的原因。(C)2015爱思唯尔有限公司。保留所有权利。
This paper reports on the new feature extraction for the determination of applied stress using magnetic Barkhausen noise (MBN). Low frequency triangular waveform excitation is used to produce alternative magnetic field on case-carburized and tempered En36 steel specimens. Under applied elastic stress, both of the compressive and tensile type, the MBN signal is measured and the profile of MBN signal is obtained. Effective damping in Barkhausen noise for asymmetric shape is studied with compressive and tensile applied stress characterization. Then the skewness of the MBN profile is presented as a new feature for stress detection. Non-linear behavior and sensitivity of the new feature are compared with root mean square (RMS) peak value and peak position. Domain wall energy and eddy current damping are discussed as the reason of the phenomenon. (C) 2015 Elsevier Ltd. All rights reserved.